Boiled wool is to regular wool what Superman is to Jimmy Olsen. Though it remains lightweight, it becomes incredibly dense, which means it's softer, warmer and more weather-resistant than the regular stuff. Want the superpower? Get the men's Horny Toad Felton Sweater (cape and codpiece optional). Made from our blend of boiled 70% lambswool, 20% angora and 10% nylon with a double-layer collar, full-button front, chest pocket, seam-out detailing, and a rolled finish at the cuffs and hem.